21223223251124 has 24 divisors (see below), whose sum is σ = 37174651409280. Its totient is φ = 10601896584384.

The previous prime is 21223223251123. The next prime is 21223223251171. The reversal of 21223223251124 is 42115232232212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223223251123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37060757 + ... + 37629059.

It is an arithmetic number, because the mean of its divisors is an integer number (1548943808720).

Almost surely, 2^{21223223251124} is an apocalyptic number.

It is an amenable number.

21223223251124 is a deficient number, since it is larger than the sum of its proper divisors (15951428158156).

21223223251124 is a wasteful number, since it uses less digits than its factorization.

21223223251124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576839 (or 576837 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

Adding to 21223223251124 its reverse (42115232232212), we get a palindrome (63338455483336).

The spelling of 21223223251124 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred twenty-three million, two hundred fifty-one thousand, one hundred twenty-four".